The conventional wisdom is that it takes 15 minutes of close contact to a contagious person to put you at risk. But even a short exposure could prove problematic.
Prime Minister Pedro Sánchez made the declaration to overcome objections by local officials to new lockdown rules. The restrictions "create chaos," said Isabel Díaz Ayuso, Madrid's president.
Women often bear a heavier burden at times of crisis. They take care of the kids, the house, the survival of families. NPR photographed and interviewed 19 women over 3 weeks. Here are their stories.
The Chinese foreign ministry said it took this step "to uphold the concept of a shared community of health for all and to honor its commitment to turn COVID-19 vaccines into a global public good."
Scientists know that tiny particles from smoke can be inhaled deep into a person's lungs and even enter the bloodstream. But the long-term health effects of this are not fully understood.
They faced bias against women in science. They faced racism because their families come from Africa. And they triumphed in a competition to develop a problem-solving app!
The drug remdesivir emerged in part because researchers had previously tested it in China through a project whose grant was abruptly ended by the National Institutes of Health.
"We can let ourselves once again feel pride," said New Zealand Prime Minister Jacinda Ardern, "that we managed to get to that position together." Auckland's restrictions lifted on Wednesday.